
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="x-ua-compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Title</title>
</head>
<body>
    <div>
        <form action="http://www.baidu.com" method="get">
            <div>
                <!-- 下拉框 -->
<!--            <select id="mouse" multiple="multiple">-->
                <select id="mouse" width="100px" height="50">
                    <option id="0" value="guangzhou">广州</option>
                    <option id="1" value="shenzheng">深圳</option>
                    <option id="2" value="shandong">山东</option>
                    <option id="3" value="beijing">北京</option>
                    <option id="4" value="shanghai">上海</option>
                    <option id="5" value="chengdu">成都</option>
                </select>
            </div>
        </form>
    </div>
</body>
